18061950 has 24 divisors (see below), whose sum is σ = 44794008. Its totient is φ = 4816480.

The previous prime is 18061949. The next prime is 18061963. The reversal of 18061950 is 5916081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60057 + ... + 60356.

It is an arithmetic number, because the mean of its divisors is an integer number (1866417).

Almost surely, 2^18061950 is an apocalyptic number.

18061950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18061950 is an abundant number, since it is smaller than the sum of its proper divisors (26732058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18061950 is a wasteful number, since it uses less digits than its factorization.

18061950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120428 (or 120423 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 18061950 is about 4249.9352936251. The cubic root of 18061950 is about 262.3744524348.

The spelling of 18061950 in words is "eighteen million, sixty-one thousand, nine hundred fifty".